1. line p intersects line t. p and t form a right angle. In conclusion: line p and line t are perpendicular lines.
→ Lines that intersect to form a right angle are called PERPENDICULAR lines.
2. If mZRED = 56° and mZBIG = 56°, then ZRED and ZBIG are congruent angles.
→ Two angles are said to be congruent if their corresponding sides and angles are of equal measure.
3. Line k and line s are on the same plane and they do not intersect. Line k and line s are parallel lines
→ Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect
4. mZD = 37º and mZF = 53º. ZD and ZF are complementary angles
→ Two angles are called complementary when their measures add to 90 degrees.
5. 26 and 27 are adjacent angles. m26 + m27 = 180°. 26 and 27 are supplementary angles
→ Two angles are called supplementary when their measures add up to 180 degrees.
